JP2842901B2 - Vehicle control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a variable-speed vehicle control device, and relates to a first grounding element and a second grounding element arranged at an interval from each other.
And a transmitting circuit and a receiving circuit. The transmitting circuit supplies an inspection signal to the first ground element, and the receiving signal is received by the receiving circuit via the first ground element. The receiving circuit outputs the first contact condition when the check signal cannot be received, and outputs the second contact condition at a constant time based on the next reception time after the check signal cannot be received. When the vehicle arm is coupled to the first ground arm, the checking signal is suppressed by the constant oscillation frequency signal of the variable-frequency oscillation circuit to satisfy the first contact condition, and the second contact condition is satisfied. By releasing the resonance circuit by short-circuiting, etc., when performing variable speed inspection and vehicle control, without the need for track circuit conditions,
The short circuit of the resonance circuit of the second grounding element can be automatically canceled.

<Prior Art> FIG. 3 is a diagram showing a configuration of a conventional variable-speed vehicle control device. In the figure, 1 is a track, 2 is a vehicle, 3 is a ground device, and 4 is an on-board device provided on the vehicle 2.

The ground apparatus 3 has a first ground element 31, a second ground element 32, and a receiving circuit 33. First ground child 31 and second ground child 32
Along the running direction a of the vehicle 2, it is arranged at a speed Shosa section with a spacing l _1.

The first ground element 31 constitutes a kind of antenna for receiving a transmission wave transmitted from the on-board device 4. The transmission wave received by the first ground element 31 is received by a receiving circuit via a matching unit 34.
Entered in 33. The second ground coils 32 constitute a resonance circuit of the coil L ₀ and capacitor C _0.

The receiving circuit 33 includes a resistance attenuator 331, a bandpass filter 3
32, a resistance attenuator 333, an amplifier 334, a level determiner 335, an amplifier 336, and the like. 337 indicates a timer circuit.
MR, MPR, TMR, COR, QR, TRP are relays. MR _{1 to} MR ₃
Is a contact point of the relay MR. Of these contacts MR _{1 to} MR ₃ , the contacts MR ₁ and MR ₂ are lifting contacts that lift and close when the relay MR is excited, and the contacts MR ₃ are when the relay MR is de-energized. It is a falling contact that falls and closes. MPR ₁ and MP
R ₂ is a contact of the relay MPR. These contacts MPR ₁ and MPR
₂ is a lifting contact. TMR _{1 to} TMR ₃ are contacts of the relay TMR. The contacts TMR ₁ and TMR ₂ are drop contacts, and the contact TMR ₃ is a lifting contact. COR ₁ is the lifting contact of the relay COR. QR ₁ is the contact of the relay QR, and TRP ₁ is the lifting contact of the relay TRP. TR is a contact point of the track relay, and inputs track circuit conditions.

The on-board device 4 includes an on-board element 41, an oscillation circuit 42, and a frequency selection circuit 43. The vehicle upper body 41 is a kind of antenna, and forms a feedback circuit of the oscillation circuit 42.

The oscillation circuit 42 includes an amplification circuit 421, a phase circuit 422, and a limiter 42.
3 and an amplifier circuit 424, etc., and has a circuit configuration in which the output of the amplifier circuit 424 of the last stage is fed back to the amplifier circuit 421 of the input stage through the upper arm 41. A frequency sorting circuit 430 the frequency sorting circuit 43 for detecting the constantly oscillating frequency f _0, the n resonant frequency f ₁ ~f _n, i.e. the n frequency sorting circuit 431~43n corresponding to n point information It is configured by connecting in parallel. Each of the frequency selection circuits 431 to 43n includes a band-pass filter 501, an amplification circuit 502, a level detector 503, and an amplification circuit 5
04.

In the above-described conventional vehicle control device, the vehicle upper body 41 is
In a state not bound to the ground element 32, the oscillation circuit 42 is operating in constant oscillation frequency f _0.

When the upper armature 41 of the onboard device 4 provided in the vehicle 2 passes over the first ground arm 31, the oscillation frequency f ₀ is always received by the first earth arm 31 and is guided to the receiving circuit 33. I will In the receiving circuit 33 extracts the component of the constantly oscillating frequency f ₀ by a band-pass filter 332, amplified by the amplifier 334, the level determined by the level determination unit 335 is further amplified by the amplifier 336. Since the output signal of the amplifier 336 is provided through the drop contacts TMR ₁ relay TMR relay MR, the relay MR is excited, jacked contacts MR _1, MR ₂ is closed. Relay MR is self held by closing the jacked contacts MR _1.

In this case, you have already falling contacts TR orbit relay to enter the track circuit conditions, the relay TRP is excited, because the jack up contact TRP ₁ is closed, by jacked contacts MR ₂ is closed, the relay The MPR is excited through the lifting contact TRP ₁ and the lifting contact MR ₂ . Relay MPR, self lifting contact MPR ₁
, And is continuously excited.

When the lifting contact MPR ₂ closes due to the excitation of the relay MPR,
The timer circuit 337 starts counting time. Then, when the preset time element is counted, the timer circuit 337 counts. An up signal is output, and this signal excites the relay TMR. When the relay TMR is excited, the lifting contact TMR ₃ is closed, and the relay COR is excited through the lifting contact TMR ₃ and the contact MPR _{3 of} the already closed relay MPR.

When the relay COR is energized, because the jack up contact COR ₁ is closed, the relay QR is energized. Along with the excitation of the relay QR, the jack up contacts QR ₁ is closed. If jacked contacts QR ₁ is closed, the second ground coils 32, the resonance circuit of the coil L ₀ and capacitor C ₀ is a state of being short-circuited by the jacked contacts QR _1, no longer act as a resonant circuit .

In the above configuration, when the vehicle 2 is traveling at a predetermined reference internal speed, the timer circuit 337 counts up after passing the ground child 31 and before passing the ground child 32.
Is up. Therefore, when the vehicle 2 passes over the second ground member 32, the relays TMR, COR, and QR are already in an excited state, and the lifting device connected to the resonance circuit of the second ground member 32 has already been excited. contacts QR ₁ is closed, the second ground coils 32 does not operate as a resonant circuit. Therefore, the vehicle control operation is not performed between the second ground child 32 and the vehicle upper child 41.

However, when the vehicle 2 is traveling at a speed exceeding a predetermined traveling speed, after passing over the first ground element 31 and then passing over the second ground element 32, a timer circuit is provided. 337 is time counting, relay TMR, COR and QR
Is a still non-excited state, a state in which jacked contacts QR ₁ connected to the resonant circuit of the second ground element 32 is opened. Therefore, when relative to each other when the on-board coil 41 passes over a second ground element 32, the resonant frequency of the second ground coils 32 are frequency f ₁ ~
becomes non-f _n, is Edit other than the frequency f ₁ ~f _n. For this reason, the frequency selection cannot be performed by the frequency selection circuits 431 to 43n, and the output becomes no signal, so that vehicle control such as emergency braking is performed.

<Problem to be Solved by the Invention> However, in the above-described conventional vehicle control device, the vehicle 2
The vehicle control device itself cannot know when the vehicle has passed over the second ground element 32. This means that the relay
The timing for returning the jack up contacts QR ₁ of QR is unknown, it means that the fail-safe property can not be secured. Conventionally, as shown in FIG. 3, relays TRP, M
PR, sequentially controls the COR and QR, finally, to return the jack up contacts QR ₁ relay QR, had been determined vehicle passing by the return of the jack up contacts QR _1, for obtaining the track circuit conditions Cable laying was required, which led to an increase in equipment costs.

Accordingly, an object of the present invention is to solve the conventional problems described above and to provide a vehicle control device capable of automatically canceling a resonance circuit short circuit of a second grounding element without requiring track circuit conditions. It is to be.

<Means for Solving the Problems> In order to solve the above-described problems, the present invention is a vehicle control device including a combination of a ground device and an on-vehicle device, wherein the ground device includes a first ground child. , A second grounding element, a transmission circuit and a receiving circuit, wherein the first grounding element and the second grounding element are arranged at intervals along a traveling direction of the vehicle, and the transmission circuit includes: Providing a verification signal to a first ground conductor, the receiving circuit being connected to the first ground conductor to receive the verification signal via the first ground conductor, When the signal cannot be received, the first contact condition is output, and after the reference signal cannot be received, the second contact condition is determined based on the time when the next check signal can be received. And the second ground child is When the first contact condition is given from the receiving circuit, the circuit constitutes a resonance circuit, and when the second contact condition is given, the circuit does not constitute a resonance circuit. An oscillation circuit which is a part of a circuit, wherein the oscillation circuit is always oscillating at a constant oscillation frequency, and when the vehicle arm is coupled to the first ground arm, the constant oscillation frequency signal Thereby, the check signal is suppressed so that it cannot be received by the receiving circuit, and the second ground element constitutes a resonance circuit when the vehicle element is coupled to the second ground element. In some cases, the frequency of the circuit is changed to the resonance frequency.

<Operation> When the upper child of the on-vehicle device is connected to the first ground child, the transmitting circuit of the ground device constantly transmits the first oscillating frequency signal to the first ground child.
The verification signal supplied to the receiving circuit of the ground equipment via the grounding element is suppressed so that the receiving signal of the ground equipment cannot be received.

The receiving circuit of the ground device outputs the first contact condition when the check signal cannot be received. Given this first contact condition, the second ground element constitutes a resonance circuit. When the vehicle passes over the second ground member while the resonance circuit is configured, the on-board device is changed to the resonance frequency of the second ground member, and vehicle control such as emergency braking is applied. First
After the contact condition is established, and before the second contact condition is established, the vehicle passes over the second ground member according to a speed check set between the first ground member and the second ground member. This is a case where the vehicle travels in a section at a speed exceeding the reference traveling speed.

The receiving circuit of the ground device also outputs the second contact condition at a certain time element based on the time point at which the next check signal can be received after the check signal cannot be received. The second grounding element does not form a resonance circuit when the second contact condition is given from the receiving circuit. Therefore, when the vehicle passes over the second grounding element after the second contact condition is satisfied, the frequency change from the second grounding element to the on-board device is not performed. The vehicle passes over the second ground member after the second contact condition is satisfied, because the vehicle passes through the speed checking section set between the first ground member and the second ground member at the reference traveling speed. This is the case when traveling.

The resonance circuit of the second grounding element, which has been short-circuited under the second contact condition, is reconfigured by releasing the short-circuit when the vehicle passes over the first grounding element and the first contact condition is satisfied. You. Accordingly, the resonance circuit short-circuit of the second grounding element can be automatically released without requiring the track circuit conditions and the like, and fail-safety is ensured.

<Embodiment> FIG. 1 is a block diagram of a vehicle control device according to the present invention. In the figure, the same reference numerals as those in FIG. 3 indicate identical components. Reference numeral 6 denotes a ground device. The ground apparatus 6 includes a first ground element 61, a second ground element 62, a transmission circuit 63, and a reception circuit 64. 65 is a matching box.

The first ground element 61 and the second ground element 62, along the running direction a of the vehicle 2, are arranged at a speed Shosa interval distance l _1. The first ground element 61 is transmitted through the matching circuit 65 to the transmission circuit 63.
And the receiving circuit 64.

The transmission circuit 63 supplies a check signal to the first ground element 61. Transmission circuit 63 shown in the examples, a continuous wave output signal f _C of the oscillator 631, the square-wave output signal f _S of the oscillator 632,
Amplitude-modulated by the modulator 633, an amplifier 634, through resistor attenuator 635 and an amplifier 636, and supplies the Shosa signal f _CH is an amplitude-modulated wave to the first ground unit 61.

The receiving circuit 64 receives the reference signal f _CH via the first ground terminal 61.
Connected to the first ground child 61 to receive
When Shosa signal f _CH is no longer able to receive outputs a first contact condition, a constant time element relative to the time when the next Shosa signal f _CH from no longer be received is Shosa signal f _CH can now receive Output the second contact condition. The receiving circuit 64
Resistance attenuator 641, filter 642, resistance attenuator 643, amplifier 6
44, the demodulator 645, a limiter 646, the filter 647 extracts the square wave component f _S, and a like level determiner 648 and an amplifier 649, such as a Schmitt circuit. 650 is a timer circuit, MR, TM
R, COR and QR are relays. MR ₁ and MR ₂ are the lifting contacts of the relay MR, TMR ₁ are the lifting contacts of the relay TMR, and COR ₁ is the relay COR
The lifting contact, QR ₁ is the lifting contact of the relay QR. The circuit configuration using the relays and the contacts is an example for explaining the basic operation of the present invention, and in practical use, the circuit configuration is more complicated in order to ensure a higher control sequence and fail-safe performance.

The second ground element 32 is a circuit that forms a resonance circuit when the first contact condition is given from the receiving circuit 64 and does not form a resonance circuit when the second contact condition is given. The first contact condition corresponds to a state in which jack up contacts QR ₁ relay QR is open, the second contact condition corresponds to a state closing the jack up contacts QR _1.

The on-board device 4 includes an oscillating circuit 42 and a frequency selection circuit, the on-board element 41 of which is a part of the circuit, as in the conventional example shown in FIG.
Contains 43. The oscillation circuit 42 has a constant oscillation frequency
When the vehicle is oscillating at f ₀ and the upper child element 41 is coupled to the first ground element 61, the oscillating frequency signal f ₀ constantly generates a reference signal.
Suppression is applied to f _{CH so} that the reception circuit 64 cannot receive the signal. Further, when the on-board coil 41 is bonded to the second ground coils 62, when the second ground coils 62 constitute a resonance circuit of an inductor L ₀ and capacitor C _0, is modulated in its resonant frequency You.

Next, the operation of the embodiment will be described with reference to the time chart of FIG. In FIG. 2, 0 indicates the non-excitation state of the relay, and 1 indicates the excitation state.

When the vehicle 2 is traveling far away track 1 above the first ground coils 61, Shosa signal f _CH transmitted from the transmitting circuit 63 of the ground device 6, the first ground unit 61 and matching unit The signal is received by the receiving circuit 64 through 65. In the receiving circuit 64,
After the input reference signal f _CH is extracted by the filter 642, it is amplified by the amplifier 644, demodulated by the demodulator 645, the square wave component f _S is extracted by the filter 647, and the level is determined by the level determiner 648. Output from the amplifier 649. In this case, since they are not subjected to any suppression from the onboard system 4 side with respect Shosa signal f _CH, the output of the decision output and the amplifier 649 of level determiner 647 is high level. Therefore, the relay MR is connected to the amplifier 649
Is excited by the output of While the relay MR is energized, the relays TMR, COR and QR are in an excited state.

The second ground coils 2, since jacked contacts QR ₁ relay QR is closed, the resonant circuit is short-circuited by the coil L ₀ and capacitor C _0, the resonance circuit is not configured.

Next, at time t ₀ when the vehicle 2 passes over the first ground arm 31, when the vehicle arm 41 is coupled to the first ground arm 61, the constantly oscillating frequency signal f ₀ transmitted from the on-board device 4 is transmitted. and the suppression effect on the applied Shosa signal f _CH supplied to the receiving circuit 64 from the transmitting circuit 63 via the first ground unit 61. More specifically, if the relationship between the level V ₀ which level V _CH and constantly oscillating frequency signal f ₀ of Shosa signal f _CH, was selected as V _CH "V _0, for Shosa signal f _CH in limiter 646 suppression effect occurs, since the level of the frequency components f _S extracted by the filter 647 does not reach a prescribed value, the output level determiner 648 and amplifier 649 is eliminated. Therefore, as shown in FIG. 2 (a), the relay MR is non-excited state at t _0. The contact output of the relay MR at this time becomes the first contact condition.

Lifting contact MR ₁ due to non-excitation of relay MR
Is opened, and as shown in FIGS. 2 (b) to (d), the relay
TMR, COR, and QR are not excited. Accordingly, the second ground unit of the relay QR connected to 62 jack up the contact QR ₁ is opened, the resonant circuit is constituted by a coil L ₀ and capacitor C _0.

Then, vehicle 2 further travels in the direction of arrow a, the coupling between the first ground unit 61 of t ₁ during board coil 41 expires, the transmitting circuit 63
Suppression effect on Shosa signal f _CH supplied to the receiving circuit 64 from is canceled. Therefore, as shown in FIG. 2 (a), t ₁ at the relay MR is again energized state.

By the excitation of the relay MR, so jacked contact MR ₁ is closed,
Jack up contacts MR ₁ closed o'clock t ₁ as a reference, the timer circuit 640
Starts clock pulse counting. Since in practice there is a slight time delay, the timer circuit 640 starts Tokimoto counting from t ₂ times a little delayed than at t _1. And t ₃
When the count is counted up, the relay TMR is excited by the count-up signal as shown in FIG. 2 (b). It becomes relay TMR is excited state, when the jack up contacts TMR ₁ is closed, so that the relay COR is shown in FIG. 2 (c), t ₄
At that time, it becomes excited and its lifting contact COR ₁ closes. Therefore, it becomes t ₅ o'clock excited state as relay QR is shown in FIG. 2 (d), the jack up contacts QR ₁ is closed. Contact conditions jacked contacts QR ₁ at this time is the second contact condition.

The establishment of the second contact condition, a second ground coils 62, the resonance circuit of the coil L ₀ and capacitor C ₀ is a state of being short-circuited by the jacked contacts QR _1, the resonant circuit is not configured.

As described above, the resonance circuit of the second grounding element 62 is configured within the time (t ₂ −t ₃ ) from the time when the counter circuit 640 starts measuring time until the time when the counter circuit 640 counts up. The interval l of the speed check section between the first ground element 61 and the second ground element 62
₁ is set so that if the vehicle 2 is traveling at a specified reference speed, the counter circuit 640 counts up and then passes over the second ground child 62. Therefore, when the vehicle 2 travels in the speed check section at the reference internal speed, the resonance circuit is short-circuited by the second contact condition at the time when the vehicle 2 passes over the second ground child 62. There is no oscillating action from the side to the upper side of the vehicle.

However, the vehicle 2 is speed Shosa interval l _1, when traveling at a speed exceeding the reference in running speed, before Kauta circuit 640 counts up, so passes over the second ground coil 62. In this state, after the first contact condition is satisfied, the second
Before the contact condition is satisfied, the second grounding element 62 constitutes a resonance circuit. Therefore, the oscillation circuit of the on-board device 4
Always oscillation frequency f ₀ of 42 is Edit the resonant frequency of the resonant circuit other than the frequency f ₁ ~f _n. Therefore, the frequency selection circuit
Since frequency selection cannot be performed at 431 to 43n, and the output is no signal, vehicle control such as emergency braking is performed.

The resonance circuit of the second ground member 62 that has been short-circuited under the second contact condition is opened when the vehicle 2 passes over the first ground member 61 and the first contact condition is satisfied. Thus, a resonance circuit of the second grounding element 62 is formed. Therefore,
Without the need for track circuit conditions etc.
The short circuit of the 62 resonance circuit is automatically released, and fail-safety can be secured.

<Effects of the Invention> As described above, the vehicle control device according to the present invention includes the ground device including the first ground member and the second ground member, the transmission circuit, and the reception circuit, which are arranged at an interval from each other. The transmitting circuit supplies an inspection signal from the transmitting circuit to the first ground element, and the receiving signal is received by the receiving circuit via the first ground element, and the receiving circuit can receive the inspection signal. The first contact condition is output when the signal disappears, and the second contact condition is output at a constant time based on the next reception time after the reference signal cannot be received.
When coupled to the ground element of the present invention, the reference signal is suppressed by the constant oscillation frequency signal of the variable-frequency oscillation circuit so that the first contact condition is satisfied, and the resonance circuit is formed. Therefore, it is possible to provide a vehicle control device capable of automatically canceling the resonance circuit short-circuit of the second grounding element without requiring the track circuit condition when performing the variable speed speed check and the vehicle control. .

[Brief description of the drawings]

FIG. 1 is a block diagram of a vehicle control device according to the present invention, and FIG.
The figure is also a time chart for explaining the operation,
FIG. 3 is a block diagram of a conventional vehicle control device. DESCRIPTION OF SYMBOLS 1 ... Track, 2 ... Vehicle 4 ... On-board equipment, 41 ... On-board equipment 6 ... Ground equipment 61 ... First ground element 62 ... Second ground element 63 ... Transmission circuit, 64 ...... Reception circuit

Claims (1)

(57) [Claims] 1. A vehicle control device comprising a combination of a ground device and an on-board device, wherein the ground device includes a first ground element, a second ground element, a transmission circuit, and a reception circuit, The first ground element and the second ground element are arranged at intervals along the traveling direction of the vehicle, and the transmission circuit supplies an inspection signal to the first ground element, The receiving circuit is connected to the first ground terminal so as to receive the inspection signal via the first ground terminal, and outputs a first contact condition when the verification signal cannot be received. The second contact condition is output at a constant time based on the time point at which the control signal can no longer be received and the next control signal can be received. Resonance when the first contact condition is given from the receiving circuit. A circuit that does not constitute a resonance circuit when the second contact condition is given, wherein the on-board device includes an oscillation circuit that includes an on-board element as a part of the circuit, and the oscillation circuit includes: Oscillates at a constant oscillation frequency at all times, and when the vehicle armature is coupled to the first ground armature, the constant oscillation frequency signal makes it impossible for the receiver to receive the check signal. In the case where the vehicle grounding element is combined with the second grounding element and the second grounding element constitutes a resonance circuit, the frequency is changed to the resonance frequency. Characteristic vehicle control device.